JP2647236B2 - Manufacturing method of polishing object - Google Patents

Manufacturing method of polishing object

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Publication number
JP2647236B2
JP2647236B2 JP2177652A JP17765290A JP2647236B2 JP 2647236 B2 JP2647236 B2 JP 2647236B2 JP 2177652 A JP2177652 A JP 2177652A JP 17765290 A JP17765290 A JP 17765290A JP 2647236 B2 JP2647236 B2 JP 2647236B2
Authority
JP
Japan
Prior art keywords
layer
carbide
concentration
layers
bonding metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2177652A
Other languages
Japanese (ja)
Other versions
JPH03117566A (en
Inventor
アイアン ロイド アンドリュー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DE BIAZU IND DAIAMONDO DEIBIJON Ltd
Original Assignee
DE BIAZU IND DAIAMONDO DEIBIJON Ltd
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Filing date
Publication date
Application filed by DE BIAZU IND DAIAMONDO DEIBIJON Ltd filed Critical DE BIAZU IND DAIAMONDO DEIBIJON Ltd
Publication of JPH03117566A publication Critical patent/JPH03117566A/en
Application granted granted Critical
Publication of JP2647236B2 publication Critical patent/JP2647236B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
    • B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • B24D3/10—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for porous or cellular structure, e.g. for use with diamonds as abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/0605—Composition of the material to be processed
    • B01J2203/062—Diamond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/065—Composition of the material produced
    • B01J2203/0655—Diamond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2203/00—Processes utilising sub- or super atmospheric pressure
    • B01J2203/06—High pressure synthesis
    • B01J2203/0675—Structural or physico-chemical features of the materials processed
    • B01J2203/0685—Crystal sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Powder Metallurgy (AREA)

Abstract

A method of producing an abrasive body which consists of an abrasive compact sandwiched between layers of cemented carbide. The method includes the steps of providing an unbonded structure comprising a layer (14) of ultra-hard abrasive particles sandwiched between two carbide layers (10), (18). Each carbide layer (10), (18) is a layer of cemented carbide or a layer containing the components necessary to produce cemented carbide. The two carbide layers (10), (18) and the sandwiched layer (14) each contain a binder metal selected from cobalt, nickel, iron and the like. The concentration of binder metal in the sandwiched layer (14) is less than the concentration of the binder metal in one of the carbide layers (10), (18) and is higher than the concentration in the binder metal in the other carbide layer (10), (18). The unbonded structure is subjected to conditions of elevated temperature suitable to produce the abrasive body.

Description

【発明の詳細な説明】 ［発明の背景］ 本発明は研磨用物体の製造に関する。Description: BACKGROUND OF THE INVENTION The present invention relates to the manufacture of abrasive objects.

米国特許第4,219,339号は対向した大きな平らな表面
を有し、成形体の少なくとも70体積％の量で存在し、硬
い集塊に結合した研磨材粒子の塊を含む板状研磨用成形
体を含む研磨用物体を記述して権利を主張している。個
々の焼結炭化物（cemented carbide,超硬合金）の保持
体が大きな表面の各各に結合されている。各保持体はそ
れが結合されている全表面を実質的に覆っている。研磨
用成形体の少なくとも１つの面は切削縁又は表面を提供
するように露出されている。U.S. Pat. No. 4,219,339 includes a plate-like abrasive compact having an opposing large flat surface, present in an amount of at least 70% by volume of the compact, and comprising a mass of abrasive particles bonded to a hard agglomerate. Claims and describes the object to be polished. Individual cemented carbide carriers are bonded to each of the large surfaces. Each carrier substantially covers the entire surface to which it is attached. At least one surface of the abrasive compact is exposed to provide a cutting edge or surface.

研磨用成形体は一般にダイヤモンド又は立方晶系窒化
ホウ素の研磨材の成形体であり、セメントで接着された
炭化物の当技術において知られているどのようなもので
もよい。The abrasive compact is generally a diamond or cubic boron nitride abrasive compact and may be any cemented carbide known in the art.

この研磨用物体は、特に、仕上げ工具又は錐先用イン
サートとして応用される。錐先用インサートとして使用
されるとき、研磨用物体は錐先の加工先端に形成された
溝の中に位置するものであり、そのとき炭化物の保持体
は錐先のプロフィールに従うように外形を描かれる。そ
の物体は、一番上の炭化物の層が、特に作動の間中、ダ
イヤモンド層の欠け落ち／剥落を防止するため緩衝物と
して作用する採鉱へ利用する場合の尖端攻撃カッターに
使用することもできる。This polishing object is applied in particular as a finishing tool or a drill insert. When used as a point insert, the abrasive body is located in a groove formed in the processing tip of the point, and then the carbide support is contoured to follow the point profile. It is. The object can also be used in a point attack cutter where the top carbide layer is used in mining where it acts as a buffer, especially during operation, to prevent chipping / falling of the diamond layer. .

［発明の概要］ 本発明による、研磨用物体、特に上記の型の研磨用物
体の製法は、 （ｉ）二つの炭化物層の間に差し込まれた超硬質研磨材
粒子の層から成る未接合構造体を与える工程（但し、各
炭化物層は焼結炭化物層、又は焼結炭化物を生じるのに
必要な複数成分を含む層であり、前記二つの炭化物層と
前記差し込まれた層はそれぞれ、コバルト、ニッケル、
鉄等から成る結合用金属を含有し、前記差し込まれた層
中の前記結合用金属の濃度は前記炭化物層の一つの層の
中の前記結合用金属の濃度より小さく、他方の炭化物層
中の結合用金属の濃度より大きい。）と、 （ii）前記未接合構造体を、前記研磨用物体を造るのに
適した高温高圧条件にさらす工程とから成る。SUMMARY OF THE INVENTION A method for producing an abrasive article, particularly an abrasive article of the type described above, according to the present invention comprises: (i) an unbonded structure comprising a layer of ultra-hard abrasive particles interposed between two carbide layers. Providing a body (provided that each carbide layer is a sintered carbide layer or a layer containing a plurality of components necessary to produce a sintered carbide, and the two carbide layers and the inserted layer are each made of cobalt, nickel,
It contains a bonding metal made of iron or the like, and the concentration of the bonding metal in the inserted layer is smaller than the concentration of the bonding metal in one layer of the carbide layer, and the concentration of the bonding metal in the other carbide layer is Greater than the concentration of binding metal. And (ii) exposing the unbonded structure to high-temperature and high-pressure conditions suitable for producing the polishing object.

［実施態様の記述］ 本発明の方法によって製造される研磨用物体は、焼結
炭化物保持体の間に差し込まれた研磨材成形体から成
り、この研磨材成形体は前記保持体へ結合されている。
特に、前記研磨用物体は、前記米国特許明細書に記載の
型のものでもよい。前記研磨材成形体は通常、ダイヤモ
ンド研磨材の成形体である。DESCRIPTION OF THE EMBODIMENTS The abrasive body produced by the method of the present invention comprises an abrasive compact inserted between sintered carbide supports, which are bonded to the retainer. I have.
In particular, the polishing object may be of the type described in the aforementioned US patent. The abrasive compact is usually a diamond abrasive compact.

炭化物層は、焼結炭化物（cemented carbide,sintere
d carbide）、部分焼結炭化物、未焼成状態炭化物、前
記焼成炭化物を造るのに適した粉末混合物、又はそれら
の組合わせでもよい。本発明の一態様では、一方の炭化
物層は焼結炭化物であるが、他方の炭化物層は未焼成炭
化物である。The carbide layer is made of cemented carbide, sintere
d carbide), partially sintered carbide, unfired carbide, a powder mixture suitable for making the fired carbide, or a combination thereof. In one aspect of the invention, one carbide layer is a sintered carbide, while the other carbide layer is an unfired carbide.

その層の各々の結合材含量が他の層のどれとも相違
し、そして層中の濃度は１層の炭化物層から他の１層へ
勾配を形成する、すなわち、はさまれた層の結合用金属
の濃度は１層の炭化物層の結合用金属の濃度より少なく
他の１層の炭化物層の結合用金属の濃度よりも高いこと
が本発明の重要な面である。このことは、有効である研
磨材の成形体がその両側の上の炭化物層に完全に結合さ
れて形成されることを確実にすることがわかった。The binder content of each of the layers is different from any of the other layers, and the concentration in the layer forms a gradient from one carbide layer to another, ie, for bonding of the sandwiched layers. It is an important aspect of the present invention that the metal concentration is less than the concentration of the binding metal in one carbide layer and greater than the concentration of the binding metal in the other carbide layer. This has been found to ensure that an effective abrasive compact is formed fully bonded to the carbide layers on both sides thereof.

各層の結合用金属の濃度は製造される生成物の性質に
従って変化するものである。一般に、各層の結合用金属
の濃度は15重量％を越えない。典型的に、１層の炭化物
層は11〜13重量％の結合用金属を、他の１層の炭化物層
は４〜６重量％の濃度の結合用金属を、そしてはさまれ
た層は８〜10重量％の濃度の結合用金属を含有する。The concentration of the bonding metal in each layer will vary according to the nature of the product being produced. Generally, the concentration of the bonding metal in each layer does not exceed 15% by weight. Typically, one carbide layer contains 11-13% by weight of the bonding metal, another layer contains 4-6% by weight of the bonding metal, and the sandwiched layer contains 8% by weight of the bonding metal. Contains binding metal at a concentration of 1010% by weight.

使用される高温及び高圧の条件は研磨材の成形体を製
造するために要求されるものである。典型的に、高温は
1400〜1600℃の範囲内にあり、高圧は50〜70キロバール
の範囲内にある。典型的に、これらの高温高圧の状態は
40分までの期間保持される。The high temperature and high pressure conditions used are those required to produce the abrasive compact. Typically, high temperatures are
The pressure is in the range 1400-1600 ° C. and the high pressure is in the range 50-70 kbar. Typically, these high temperature and high pressure conditions
Held for up to 40 minutes.

さて、本発明の一実施態様に添付の図面に関して記述
する。この図を参照すると平面図で円形である焼結炭化
物のボウル10が示されている。ボウル10はまた平面図で
円形である空洞12を有する。コバルトとダイヤモンドの
粒子の粉末混合物の層14が空洞12の基底16上に置かれ、
その後予備成形した未焼成状態の炭化物物体18が空洞12
を満たすようコバルトとダイヤモンドの混合物14の一番
上に置かれる。ボウル10の焼結炭化物はコバルトを11％
〜13重量％含有し、コバルトとダイヤモンドの混合物14
はコバルトを10重量％含有し、未焼成状態の炭化物物体
18はコバルトを６重量％含有する。炭化物は炭化タング
ステンである。An embodiment of the present invention will now be described with reference to the accompanying drawings. Referring to this figure, there is shown a bowl 10 of sintered carbide that is circular in plan view. Bowl 10 also has a cavity 12, which is circular in plan view. A layer 14 of a powder mixture of cobalt and diamond particles is placed on the base 16 of the cavity 12,
Thereafter, the preformed unfired carbide body 18 is hollow 12
Is placed on top of the mixture of cobalt and diamond 14. Bowl 10 sintered carbide is 11% cobalt
~ 13% by weight, a mixture of cobalt and diamond14
Contains 10% by weight of cobalt and is an unfired carbide
18 contains 6% by weight of cobalt. The carbide is tungsten carbide.

詰め込まれたボウル10を適切な反応容器中に置き、そ
れから慣例的な高圧／高温装置の反応帯域内に置く。反
応容器の内容物を1500℃の温度及び50キロバールの圧力
にさらす。これらの高い状態を20分間保持する。これら
の高温高圧条件のもとで、ダイヤモンドの成形体が層14
から形成され、未焼成状態の炭化物18がセメントで接着
された炭化物に転換させられる。これらの層はお互い
に、炭化物ボウル10に結合させられる。The packed bowl 10 is placed in a suitable reaction vessel and then in the reaction zone of a conventional high pressure / high temperature apparatus. The contents of the reaction vessel are exposed to a temperature of 1500 ° C. and a pressure of 50 kbar. Hold these elevated conditions for 20 minutes. Under these high temperature and high pressure conditions, the diamond compact
And the unfired carbides 18 are converted to cemented carbides. These layers are bonded together to the carbide bowl 10.

焼結生成物を標準的な技術を使用して反応容器から回
収し次いでボウルの側面帯域20を研削又は類似の手段に
よって除去する。このことは円板の形状をした炭化物の
層22とその間にはさまれたダイヤモンドの研磨材成形体
24からなる第２図に示す研磨用物体を残す。研磨材成形
体の周表面26は切削表面を提供する。もし望むならば、
成形体の切削表面26に隣接する炭化物層を、成形体の切
削表面をより良く露出させるために切り払うか又は別の
やり形で外形を描くことができる。The sinter product is recovered from the reaction vessel using standard techniques, and then the side zones 20 of the bowl are removed by grinding or similar means. This means that a disc-shaped carbide layer 22 is sandwiched between the diamond abrasive compacts.
The polishing object shown in FIG. The peripheral surface 26 of the abrasive compact provides a cutting surface. If you want
The carbide layer adjacent to the cutting surface 26 of the compact may be trimmed or contoured to better expose the cutting surface of the compact.

さらにつけ加えて、いろいろな形たとえば正方形、長
方形、三角形又は同様のもののようなさまざまなほかの
物体をこの生成物から切って作ることができる。そのよ
うな形状の一つを第２図に点線で示す。In addition, various other objects, such as various shapes such as squares, rectangles, triangles or the like, can be cut from the product. One such shape is shown by the dotted line in FIG.

【図面の簡単な説明】 第１図は本発明の方法を実施するために適した非結合構
造の側断面図を示す。 第２図は本発明の方法によって製造された研磨用物体の
斜視図を示す。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a side sectional view of a non-bonded structure suitable for performing the method of the present invention. FIG. 2 shows a perspective view of a polishing object manufactured by the method of the present invention.

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】研磨用物体の製法において、 （ｉ）二つの炭化物層の間に差し込まれた超硬質研磨材
粒子の層から成る未接合構造体を与える工程、但し、各
炭化物層は焼結炭化物層、又は焼結炭化物を生じるのに
必要な複数成分を含む層であり、前記二つの炭化物層と
前記差し込まれた層はそれぞれ、コバルト、ニッケル、
鉄等から成る結合用金属を含有し、前記差し込まれた層
中の前記結合用金属の濃度は前記炭化物層の一つの層の
中の前記結合用金属の濃度より小さく、他方の炭化物層
中の結合用金属の濃度より大きい、と、 （ii）前記未接合構造体を、前記研磨用物体を造るのに
適した高温高圧条件にさらす工程と から成る、上記製法。1. A method of manufacturing an abrasive body comprising: (i) providing an unbonded structure comprising a layer of superhard abrasive particles interposed between two carbide layers, wherein each carbide layer is sintered. A carbide layer, or a layer containing multiple components necessary to produce a sintered carbide, wherein the two carbide layers and the interposed layer are each cobalt, nickel,
It contains a bonding metal made of iron or the like, and the concentration of the bonding metal in the inserted layer is smaller than the concentration of the bonding metal in one layer of the carbide layer, and the concentration of the bonding metal in the other carbide layer is And (ii) exposing said unbonded structure to high-temperature and high-pressure conditions suitable for producing said polishing object. 【請求項２】各層中の結合用金属の濃度は15重量％を越
えない請求項１記載の方法。2. The method of claim 1, wherein the concentration of the bonding metal in each layer does not exceed 15% by weight. 【請求項３】結合用金属の濃度は、炭化物層の一つの層
で11〜13重量％の範囲であり、他方の層で４〜６重量％
の範囲であり、差し込まれた層で８〜10重量％の範囲で
ある請求項１又は２記載の方法。3. The concentration of the bonding metal is in the range of 11 to 13% by weight in one of the carbide layers and 4 to 6% by weight in the other layer.
3. A method according to claim 1 or claim 2 wherein the thickness of the intercalated layer is between 8 and 10% by weight. 【請求項４】一方の炭化物層は焼結炭化物であり、他方
の炭化物層は未焼成状態の炭化物である請求項１又は２
記載の方法。4. The method according to claim 1, wherein one of the carbide layers is a sintered carbide and the other carbide layer is an unfired carbide.
The described method. 【請求項５】超硬質研磨材粒子はダイヤモンド粒子であ
る請求項１〜４のいずれか１項記載の方法。5. The method according to claim 1, wherein the ultra-hard abrasive particles are diamond particles. 【請求項６】高温が1400〜1600℃の範囲内にあり、高圧
が50〜70キロバールの範囲内にあり、この高温高圧状態
を40分までの間保持する請求項１〜５のいずれか１項に
記載の方法。6. The method according to claim 1, wherein the high temperature is in the range of 1400 to 1600 ° C., the high pressure is in the range of 50 to 70 kbar, and this high temperature and high pressure is maintained for up to 40 minutes. The method described in the section.
JP2177652A 1989-07-07 1990-07-06 Manufacturing method of polishing object Expired - Lifetime JP2647236B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA895183 1989-07-07
ZA89/5183 1989-07-07

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JPH03117566A JPH03117566A (en) 1991-05-20
JP2647236B2 true JP2647236B2 (en) 1997-08-27

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JP2177652A Expired - Lifetime JP2647236B2 (en) 1989-07-07 1990-07-06 Manufacturing method of polishing object

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US (1) US5106391A (en)
EP (1) EP0412649B1 (en)
JP (1) JP2647236B2 (en)
AT (1) ATE107214T1 (en)
AU (1) AU624521B2 (en)
DE (1) DE69009895D1 (en)
IE (1) IE64359B1 (en)

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US8919463B2 (en) 2010-10-25 2014-12-30 National Oilwell DHT, L.P. Polycrystalline diamond cutting element
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ATE107214T1 (en) 1994-07-15
AU5868490A (en) 1991-01-10
AU624521B2 (en) 1992-06-11
IE64359B1 (en) 1995-07-26
EP0412649A1 (en) 1991-02-13
JPH03117566A (en) 1991-05-20
IE902471A1 (en) 1991-02-13
US5106391A (en) 1992-04-21
DE69009895D1 (en) 1994-07-21
EP0412649B1 (en) 1994-06-15

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